499120281 has 27 divisors (see below), whose sum is σ = 793623103. Its totient is φ = 302050320.

The previous prime is 499120267. The next prime is 499120379. The reversal of 499120281 is 182021994.

The square root of 499120281 is 22341.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 496175625 + 2944656 = 22275^2 + 1716^2 .

It is not a de Polignac number, because 499120281 - 2²⁷ = 364902553 is a prime.

It is a super-2 number, since 2×499120281² = 498242109811037922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (499120201) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 736915 + ... + 737591.

Almost surely, 2^499120281 is an apocalyptic number.

499120281 is the 22341-st square number.

499120281 is the 11171-st centered octagonal number.

It is an amenable number.

499120281 is a deficient number, since it is larger than the sum of its proper divisors (294502822).

499120281 is an equidigital number, since it uses as much as digits as its factorization.

499120281 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1382 (or 691 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 36.

The cubic root of 499120281 is about 793.2347637619.

Multiplying 499120281 by its sum of digits (36), we get a square (17968330116 = 134046²).

The spelling of 499120281 in words is "four hundred ninety-nine million, one hundred twenty thousand, two hundred eighty-one".